20392996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:133

約数の個数: 72

約数和(自身を含む): 43323840

約数和(自身を除く): 22930844

約数列:

[1, 2, 4, 13, 17, 23, 26, 34, 46, 52, 59, 68, 92, 118, 221, 236, 289, 299, 391, 442, 578, 598, 767, 782, 884, 1003, 1156, 1196, 1357, 1534, 1564, 2006, 2714, 3068, 3757, 4012, 5083, 5428, 6647, 7514, 10166, 13039, 13294, 15028, 17051, 17641, 20332, 23069, 26078, 26588, 34102, 35282, 46138, 52156, 68204, 70564, 86411, 92276, 172822, 221663, 299897, 345644, 392173, 443326, 599794, 784346, 886652, 1199588, 1568692, 5098249, 10196498, 20392996]

約数ペア:

[(1, 20392996), (2, 10196498), (4, 5098249), (13, 1568692), (17, 1199588), (23, 886652), (26, 784346), (34, 599794), (46, 443326), (52, 392173), (59, 345644), (68, 299897), (92, 221663), (118, 172822), (221, 92276), (236, 86411), (289, 70564), (299, 68204), (391, 52156), (442, 46138), (578, 35282), (598, 34102), (767, 26588), (782, 26078), (884, 23069), (1003, 20332), (1156, 17641), (1196, 17051), (1357, 15028), (1534, 13294), (1564, 13039), (2006, 10166), (2714, 7514), (3068, 6647), (3757, 5428), (4012, 5083)]